Internal-combustion-engine-cylinder lubrication



May 18,1926. I ww sm R. L. SKINNER ET AL INTERNAL COMBUSTION ENGINE CYLINDER LUBRICATION Filed Sept. 21, 1925 Jfzawz$ Jazz 1% L. Skinner er'cly C. waZWaT/i' the omiinal'y system of the motor.

Paierofisoi may 33 W oss so IEWEEHAL-COEEQETEGELHJGZEQTE-U JLENDEEQ LZTEHXGLTEGER Application files! eptembor 2-1, 19585. iiosisl 1%. 514%.

Under certain oirouamst-ancos, as for is; the forcing of the iubriconi; ohrough its bore 55 stance when an internal-combustion engine to the several bearings as is c'ussomsry in is first started with the poms anci tho iuorimany constructions of this style. eating oil rashes cold it is desirable to sop Each connecting-rod 15, of which only ply an' excess orsdequato quantity of the ono of tho multi-oylindor! engino is i1luslubricant to the cylinders to prevent their suited a lengthwise, oylindrioai pssscoring and to aid g'enemliy in the lubriow 'sizgo 1?) thereshrough, and each such charms tion operation. or hole accommodates a soimi or coiled, bi-

This invention provides for the accommetal thermostat 1? of well-known form, the

M plishment of 15s beneficial result and ii lows? and of which secured; to o, sleovo 18 further suppiios msstsls for cutting of? such fastonoiior anchored. in that end of the pas suporfeod of the oil as soon as the motor sage oommimioaoing with the interior of ports have become hosteci sufiiciently so that tho crankshaft through its c irosponding the; cylinders will be properly lubricated by latessi opening or connocting possa o 19, the

Eabbiii metal of she conneosin -so bearing 121 the prosons preferred embodimont of being characterized of designated 21. so

the invention, such surplus oil is fed to the Tho other or mp9s? and of the thermostat oylimiors through posssgos in tho connect srri-es a sleeve 22, of slightly largo? dismeing-Yods sad the latter firs equipped with 53m: 31m: 1511s -ohsrmos'oot, snugly fitting in thermostatic moons to cause cessation o1? amt rovol ubls' in the son; 16, such bushing sash super or sxzrs lubrication as soon oi sleeve homing opposed, lateral, cutie;

she ports of rho motors have rosohe snob s ports 23 23 odsptoci Whss ths'motos or entomporoturo tho: the normsi iubiicotion wiil girls is cold to rapists? witl compsnios cross ply s propel qusmlay oi oi: to the ports 01 2 through Walls m. A? 1 u ishoss trsinsd. in this s11; to A oozwonioj making this swooi unosrstond this novel 'invsntioo midi "tho sum so insets om. toil fiiormostot swears scivsn'mgos accruing from ii's sminside tiio oomsooimgg iofi sis SEQ-Kid and, oioyment, is His accompanying dmwing $11811 wiiiis tho oiiiiisfi 0E oooiooi so forming 9; port of this spooifiosiioo, smi so sppropr '1zsmpsrsturo,. :i or oxsmpio throughout tho swam views which liko zero the siignsc or osreferenos numox'sis hows been used "so ds$ig- 's J firiiisca o oo'smoting-roii and thomoosiai;

L mots tho some pasts s, desirobio and. gyro s'oroogh t? footed smisoosmont of the mvoniuos has boon slows Woiis,

1% iilosbmmci indoizs'iiu Tolls, when those cold, tho poms in this im 1 log: srco 019 21 when art-s airs wszsn'oi" so use 1 soot-tics ssoiiion Enough so so by re mismsi-sombusion ongmo mmppozi with mosaat .1

snsion so they ow ifssourss of construction; sisovo Figure: 2; 1s pssrtzsi,longitudinal ssotxozi oiosoci.

oi'zroogo om. o1 fins COElIlfiCi-lhg roiis; and The Hippos and oi; giosssgs is oomzo.u:m-.

Figaro 3 is s "c-mmsvorso oz substantially ostos W1, and suppiio iobr com; for ills horizontal soc-hon through tfoo connecting .mlst-ism bushing as W131 ho sosuoig MJ- ZOCi on tho lino 3- of Erin's 2. oowooo.

soy moo 5' 1s wiii @flfrom the, ponig; Fins is sw' m1 lisfcsivsii soils the ifi'nfifiifiLGGfiib sizioo prssssro 530 111? loisrior of tho oomkshm. gins is of 25 1s o1 oom'oi' ions} 2% from-Which ii; hows "20 (3i; sovoml bearings sail conssq'ssntl, s Wsiiand so the up the. connecting-rods elements zzmi ohsmotoris for the lubriostion of the wrisbgin bushings soribod axe-ops in so s. their upper omis present invsnfii-onv ft "hon ililfi motor and oi: cold and. the 10% The motor oyiindsr is ohsraooerizool 11, iuttei' of somewhai} thick consistency, there its orsnkmsss 12, so giis'oon 13 and the is smsii chance of the lubricating oil. Workorsnkshoft 14L, tho lattes: sing hollow for: iogout of cossooting-rod bearings midi splashing on to the cylinder walls and hence under such circumstances these walls are not properly lubricated.

It is to overcome this objection that the thermostatically-controlled ports have been proy ided, and, accordingly, when the engine and the lubricant are cold, the ports 23 and 24 are open and the oil is pumped or played out through them directly on to the cylinder walls, the wrist-pin bushings under such circumstances creating enough back pressure on the oil to effect its delivery through the connecting-rod openings in the manner stated.

Just as soon as the motor warms up. for instance to a tcn'iperature of sixty degrees Fahrenheit, the oil will pass by the bearings and on to the cylinder walls.

To prevent over oiling under such conditions, the thermostat, by expanding, turns the sleeve 22 and closes the holes through the sides of the connecting-rod thus cutting ofi' this extra supply of oil which is not then needed.

In other words, surplus or extra oil is played or fed on to the cylinder walls while they are cold and before th normal lubricating system has become cflicicnt after which the supply of auxiliary oil is automatically terminated.

An appliance of this kind is particularly advantageous to temporarily or preliminarily supplement the action of the force-feed lubrication system and it overcomes one of the recognized serious disadvantages of the latter.

The new structure having once been installed in a motor, its action is entirely automatic and it requires no attention on the part of the operator who is assured that the engine is receiving adequate, but not undue lubrication under all conditions.

The advantages accruing from the employment of a construction of this character are more or less manifest and those skilled in this art will readily understand that many minor mechanical changes may be made in the one embodiment of the invention presented and still be within the purview of the invention as defined by the appendcd'claims and withoutthe loss of any of its material benefits and advantages.

\Ve claim:

1. In an internal-cornbustiou engine, the combination of the engine-cylinder, the reciprocatory piston therein, the crank-shaft, the connecting-rod associated with said piston and crank-shaft and having a passage therein with means for delivering the contents of said passage on to the cylinder wall, means to supply lubricant to said connecting-rod passage, and automatic means gov erning the discharge of said lubricant through said delivery means.

2. In an internal-combustion engine, the combination of the engine-cylinder, the reciprocatory piston therein, means to lubricate said cylinder and )isto1i, tl1e crankshaft, the connccting-rod associated with said piston and crank-shaft and having a passage therein with means for delivering the contents of said passage on to the cylinder wall, means to supply lubricant to said connecting-rod passage, and thermostatic means automatically governing the discharge of such lubricant through said delivery means.

3. In an llllGl'llill-COl'IllHlStlOn engine, the combination of the engine-cylinder, the reciprocatory piston therein, means to lubricate said cylinder and piston, the cranbshaft, the connecting-rod associated with said piston and crank-shaft, said connectingrod having a lengthwise passage therein with a lateral discharge port to direct the delivery of the contents of such passage on to the engine cylinder, a spiral thermostat in said passage controlling said connectingrod discharge port, and means to supply lubricant to said connecting-rod passage.

In witness whereof wehavc hereunto set our hands and seals.

RALPH L. SKINNER. n... 5. PERCY o. WALaaTn. 1.. 8. EDMOND H. LAMBERT. [11.8.] 

